Lubricating system for engine crank cases



E. N. AND C. MIMMS, JR. LUBRICATING SYSTEM FOR ENGINE CRANK CASES.

APPLICATION FILED SEPT. 25. 1920.

Patented Oct. 3

2 SHEETS-SHEET, l.

[0 M/W/Im INVENTOR. 62400.5 M/V/VJI J2 BY W A TTOR NE Y.

E. N. AND'C. MIMMS, JR. LUBRICATING SYSTEM FOR ENGINE CRANK CASES.

APPLICATION FILED SEPT. 25' 1920.

l N V ENTOR.

'wmN

w/mfssm 0 y 42%.

A TTORNE Y.

Patented @ct. 3, i922 ares EDWARD N. MIMMS AND CLAUDE MIMMS, 1TB, OF G'U'll-IRIE, KENTUCKY.

LUBRICATING SYSTEM FOR ENGINE CRANK GASES.

Application filed September 25, 3920. Serial Ho, 412,635.

ments in Lubricating- Systems for Engine Crank Cases, of which the following is a specification.

This invention relates to a lubricating systern for internal combustion engines and combines the advantages of splash lubrication with those of a continuous circulation.

of oil and is especially adapted to be used this particular type.

In some motor designs employing splash,

with a Ford engine althougli not limited to a. well is provided so that the fly wheel revolves in a bath of oil. In turning, due to centrifugal force, the fly wheel pro ects the oil adhering to it with great force. Part of the/oil thus thrown out is caught by. a tube opening into the path of oil, and is led tor- *ard over the distribution gears. On its return to the lowest part of the crank case the oil :teodino; over the distribution gears fills up the connecting' rod trough. In this way it is kept in continuous circulation.

parts of the clutch and transmission are lu-.

ln'icated in the same manner, as are the motor parts, wheel splash system it is necessary to avoid excess oil above a certain level which is usually indicated by a level cook. it has been tound desirable to keep the oil even lower than this level cock in the crank case and it is the object oi the present system to keep the oil in the fly wheel comparatively low hereby decreasing the amoijint of oil used and consequently preventing carbon from collecting on the spark plugs, cylinder heads, pistons, et cetera, as is usual in this system where an excess oi: oil is being used.

A further object of the invention is to generally improve upon systems of this nature by providing one which will be of extremely simple, durable and inexpensive construction one which is efficient and reliable in operation and well adapted to the purpose tor which it is designed.

With these and numerous other objects in view, the invention resides in certain novel features of construction and the combination and arrangement of parts as will be hereinafter fully described and claimed.

' now in use,

sion case 5 having its cover 6. I tt'a-r described are of a conventional form and All.

mission case 5 we have provided a receiving tank and as shown in Figure 1, this IGCGlF lIlQ tank 7 s formed integrally with It is well known that in this fly j I j j the crankcase 1, fly wheel well casing 3 In the drawings Figure 1 is a fragmentary side elevation of the crank case of an internal combustion engine showingour invention thereon,

Figure 2 is a section taken on the line 22 of Figure 1, V

Figure 3 is a side elevation of a receiving tank which may be attached to crank cases Figure 4 is a fragmentary side elevation of a portion of a crank case showing a modified form of the invention as illustrated in Figure l, and

Figure is a section taken on the line 5- 5 of Figure 4.

Referring to the drawings by numerals it will be seen that 1 designates the crank case which may be of any preferred construction having theusua-l crank case cover 2 thereon.

Adjacent the crank case 1 there is provided the fly wheel well casing 3 having the usual cover 4-. To the other side of this fly wheel well casing 3 there is disposed the transmis- The parts thus well known in the arts and maybe of any preferred construction.

Disposed immediately below the transand transmission case 4;. Apartition 9 sepits upper portion with an opening 10 and adjacent itslower portion with 'an opening llwhich will be much smaller than the opening 10 clearly shown in Figure 2 of the drawing. The fly wheel well casing 3.

is provided with the usual oil drain plug 8 so that it and the receiving tank may be drained when desired. It should also be noted that the lower portion or bottom of the receiving tank 7 is slanted toward the fly wheel well casing 3 so that the oil will naturally flow through the opening 11 should the rear portion of the crank case be lower than the forward portion. As is well known the fly wheel revolves in the fly wheel well casing at considerable speed and throws the oil in all directions and it is the object of this invention to accumulate the excess oil in the receiving tankZ.

Ihis receiving tank 7 is provided with the oil cocks l2 and 18 at its rear end which will be at approximately the same height as the oil cocks now commonly placed upon the fly wheel well casing. As stated above it is desirable to have the oil at a compara tively low level in the fly wheel casing and it is the purpose of this invention to collect the excess oil in the receiving tank 7 since the spray will force a portion of the excess oil into the opening 10 and other oil along the face of the partition 9 will'pass through. the opening 10 into the receiving tank 7 and accumulate therein since the opening 11 will only slowly deliver the oil into the fly wheel well casing as compared to the speed with which the oil will be fed into the receiving tank because of the comparative largeness of the opening 10. It is our purpose to place considerable more oil in the crank case than is now the custom so that the engine may run for a longer time without the necessity of replenishing the oil. Of course, when the engine is first started the level of the oil will. be comparatively high in the. fly wheel well casing but after the engine has run "for a very short length of time the excess oil will have been delivered to the receiving tank '7 and the level in the fly wheel well casing 3 will be at a comparatively low point.

In Figures 4 and 5 of the drawing we have shown a slight modification of my invention whereby instead of using the large opening 10 we provide a hollowarm lhwhich In Figure 3 of the drawing we have illustrated an attachment receiving tank 7 which is built so as to fit snugly under/the transmission case 5 and adjacent the fly wheel well casing This receiving tank 7 is provided with apipe 15 leading from. the top thereof to the top at the fly wheel well casing. The receiving tank attachment F also communicates with the bottom 01" the fly wheel wellcasing by means of anipple 16. It will readily be understood that any desired means may be used for attaching this receii' ing tank 7 to the transmission case and Ly wheel well casing and it is. therefore, not necessary to here illustrate these details.

From the foregoing description, taken in connection with the accompanying drawings the construction and operation of the invention will be readily understood without a more extended explanation. Numerous changes in form, proportion, and in the minor details of construction may be resorted to without departing from the spirit of this invention, though we donot wish. to be limited to the construction herein shown other than as claimed.

-Having thus described our invention! what we claim as new is:

l. A rec iving tank formed as to fit below the transmission case and abut the fly wheel well casing of an internal combustion engine, means provided at its lower end for communicating with the fly wheel well casing and means provided at its upper end for also communicating with said casing.

2. In a system of the class described, a rece' in; tank formed so as to fit below thev transiii sion case and abut the fiy wheel well casing of an internal combustion engine and having its bottom slanting toward the fiy wheel well casing means provided at its upper end for communicating with thefiy wheel well casing, and means provided at its lower end for communicating with the same. 1

In testimony whereof we afiix our signatures in presence of two witnesses.

EDWARD N. MiMMs. CLAUDE MIMMS, JR.

Witnesses:

E. W. NonTHrNeToN, S. T. LINN. 

